Combined sounder and resonator.



PATENTED MAR. 5, 1907.

No. 845,358. l 4 `Sl FI `COMBINED SOUNDER AND RESONATOR.

` APPLIOATION FILED APn.1o.19o6.

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\\\ "Nimm" Iwmlmllmm ATTORNEYS No. 845,858. PATBNTED MAR. 5, 1907..v s. F, OOX.

COMBINED SOUNDER AND RESONATOR.

APPLIOATION rum) AP11 10,1905.' Y

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ATTORNEYS THE NaRms PErsRs co., wAsHmamN. n. c.

STEWART FULTON COX, OF SAIiLISAW, INDIAN TERRITORY.

COMBINED SOUNDER AND RESONATOR.

Specification of Letters Patent.

Patented March 5, 1907.'

Application iiled April 10,1906. Serial No. 310,959.

T0 all whom t may concern.-

Be it known that I, STEWART FULTON COX, a citizen of the United States, and a resident of Sallisaw, District 11, Indian Territory, have invented a new and Improved Combined Sounder and Resonator, of which the following is a full, clear, and exact description.

My invention relates to telegraphic apparatus, my more particular object being to produce a combinational instrument adapted to do the work of a relay, a sounder, and a resonator.

My invention further relates to certain details of construction, the purpose of which is to improve the general efliciency of the same in the matter of producing a clear tone and of rendering certain parts readily accessible.

Reference is to be had to the accompanying drawings, forming a part of this specilication, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a vertical central section through the resonator-box and showing the apparatus of my invention, the base of the resonator-box being removed. Fig. 2 is a front elevation of the apparatus complete, the resonatorstem being partly broken away; and Fig. 3 is an inverted sectional plan view upon the line 3 3 ofFig. 1 lookingin the direction of the arrow and showing the mountings and adjustments for the electromagnet and its armature.

Mounted upon the base 4 is a stem 5, provided with a capital 6. Supported upon this capital is a board 7, narrower at the rear than at the front, and dovetailed upon this board are two other boards 8, disposed vertically, as shown, and connected together.

at the top by another board 9, the latter being arranged to slant backward, as indicated in Fig. 1. A partition 10 is dovetailed into the boards 7 and 9, and connecting the rear ends of these boards is an end board 11. Mornt-ed upon this end board is a bracket 12, provided with a head 13, the latter having a central aperture 14. An electromagnet 15 is provided with cores 16 and with a threaded stem 17. Revolubly mounted upon this threaded stem is a nut 18, which is used for adjusting the magnet 15. By turning the nut 18 the stem 17 is drawn out or to the right, according to the view shown in Fig. 1, and by turning the nut 1S in the opposite direction the stem 17 may be pushed in the opposite direction. This movement adjusts the magnet 15, and more particularly the cores 16. A permanent steel magnet 19 is provided with a supporting-plate 20, connected rigidly with it by means of a screw 21. This supporting-plate is connected by a fastening 22 with the partition 10.

A metallic plate 23 and a plate 24 of i11- sulating material are mounted upon the upper portieri of the partition 10 by means of screws 25 26.y Spaced washers 27 23 encircle the screws 25 26. l A metallic plate 28a is engaged by the screws 25 26, and a spacingbar 30 is intermediate this plate and the partition 10. The plate 28aL is provided with apertures 29, through which the cores 16 project. A yoke 31 is mounted upon the screws 25 26, and carried by this yoke is a screw 32, secured by a revoluble nut 33, being thus adjusted relatively to the yoke 31. A rectangular bracket 34 is connected rigidly with the plate 28a. An armature-lever 35, carrying an armature 35a, is mounted upon a shaft 36, which rests within cylindrical bearings 3621. These bearings are adjusted by merely turning them in the rectangular bracket 34. In order to secure the armature-lever 35 rigidly upon the shaft 36, a screw 35b is provided, and by merely loosening this screw the armature-lever may be removed frein the shaft. By merely unscrewing the cylindrical bearings 36a the shaft carrying the armature-lever may be removed bodily. A compression-spring 37 engages the armature-lever 35 and is tightened or loosened by means of a screw 3S, rovidcd with a set-nut 39. Mounted upon t e armature-lever 35 is a screw 40, which springs against the screw 26 when the armature-lever moves toward the magnet. Encircling the screw 4() is a set-nut 41, whereby it may be adjusted. Aplate 42, of insulating material, is sunken into the armature-lever 35 and is flush with one edge thereof, as will be understoodfrom Fig. 1. This plate 42, of insulating material, strikes against the screw 32 upon the back stroke of the armature-lever and because of its non-metallic character causes the back stroke to give a distinctive click, which is not readily confused with the forward stroke of the armature-lever. The wires are shown at 43 connected with binding-posts 11a on the end board 11 and are preferably woven into the form of a cable 44, which. is encircled by a revoluble stem 5. The armature-lever 35 is made, preferably, of

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aluminium. I find that if the armature-lever be made of this substance and provided with the plate 42, of insulating material, the forward stroke and the backward stroke of the armature-lever make sounds which are exceedingly pleasant to the ear and which do not become tiresome to the ear during several hours of hard work by the operator.

It will be noted that the device above described dispenses entirely with a local battery. This is because the main-line relay 15 attracts the armature 35a with suflicient force to enable the apparatus to act as a sounder. No local battery and separate sounder are therefore necessary.

As the apparatus comprises a light boxing and occupies but little space, and as the base portion Ll is made comparatively heavy, the complete device is not readily overturned, so that the stem 5 may, if desired, be made comparatively high.

My invention is used as follows: The parts being assembled as above described, the line is opened and closed so as to energize and deenergize the magnet 15 in the usual manner. This magnet being adjustable by means of the revoluble nut 18, as above described, the cores 16 are brought to a suitable distance from the armature 35a, and the armaturelever thereupon repeatedly strikes and returns. All of the screws used to receive impact are flattened at their ends. The permanent magnet 19 has no magnetic effect upon the armature, but merely serves to strengthen the mechanical relation of the parts.

I-Iaving thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In a device of the character described,

the combination of a resonator-box, a bracket mounted thereupon and provided with an aperture, an electromagnet disposed within said box and provided with a threaded stem protruding from said resonator-box and extending through said bracket, a revoluble nut mounted upon said threaded stem, an armature-lever provided with an armature disposed adjacent to said magnet, and means for limiting the play of said armature-lever.

2. In a device of the character described, the combination of a resonator-box provided with a partition, an electromagnet mounted within said resonator-box and provided with cores extending through said partition, a permanent magnet mounted Within said resonator-box and provided with poles secured to said partition so as to support said permanent magnet, an armature disposed adjacent to said poles of said electromagnet, and means for causing movement of said armature to produce sounds.

3. A device of the charac-ter described, comprising a resonator-box provided with a partition, a bracket mounted upon said partition, a screw connected with said bracket and extending through said partition for the purpose of forming a limiting-stop, an armature-lever for striking said screw, and an electromagnet for actuating said armaturelever.

In testimony whereof I have signed my name to this speciiication in the presence of two subscribing witnesses.

STEWART FULTON COX.

Witnesses:

B. P. PATTERsoN, HENRY CONNELLY. 

